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3 years ago

Explain negative exponents please!!

2 answers:

5 0

Whatever number is the exponent if negative just move it to the right how much the number is. if it 5 with an exponent of -3 then you just move the decimal point 3 times to the right. The anwer to that question would be .005

julsineya [31]3 years ago

3 0

Here are some examples of negative exponents:

3 with an exponent of negative 2
7 with an exponent of negative 4
5 with an exponent of negative 9

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Linda is 12 years younger than her sister Laura. Together their total age is 18. How old is Linda? How old is Laura?

geniusboy [140]

Answer:

Linda: 3 ; Laura: 15

Step-by-step explanation:

Note that Linda + Laura's age is 18, and that Linda is 12 years younger than her sister.

Let "Linda" = x , "Laura" = y:

x + y = 18

x = y - 12

First, plug in y - 12 for x in the first equation:

(y - 12) + y = 18

Simplify.

2y - 12 = 18

Isolate the variable (y). Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First add, then divide.

2y - 12 (+12) = 18 (+12)

2y = 18 + 12

2y = 30

(2y)/2 = (30)/2

y = 30/2

y = 15

Next, plug in 15 for y in the second equation (the other equation would work too).

x = y - 12

x = (15) - 12

x = 3

Linda's age is 3, Laura's age is 15.

7 0

3 years ago

A shipping container will be used to transport several 140-kilogram crates across the

velikii [3]

Answer:

91.42 crates

Step-by-step explanation:

Let

Greatest Number of 140kg crates = x

weight of crate = 140-kilogram

Weight of other shipment = 13200 kilograms

greatest weight of container = 26000 kilograms

Weight of other shipment + (weight of crate * number of crates) ≤ greatest weight of container

13,200 + 140x ≤ 26,000

140x ≤ 26,000 - 13,200

140x ≤ 12,800

x ≤ 12,800/140

x ≤ 91.42 kilograms

Greatest Number of 140kg crates = 91.42 crates

8 0

3 years ago

Checking account A charges a monthly service fee of $23 and a wire transfer fee of $7.50, while checking account B charges a mon

trapecia [35]

Checking account B
9.50 x 4 = 38

3 0

3 years ago

Read 2 more answers

City code says you need to have a total of at least 54 toilet stalls, but each bathroom can only have 6 stalls. How many bathroo

Lady bird [3.3K]

City code says you need to have a total of at least 54 toilet stalls, but each bathroom can only have 6 stalls.

So, Let the number of bathrooms to be built be = x

Number of toilet stalls needed = 54

Number of stalls each bathroom can have = 6

So, the number of bathrooms to be built are =

$6(x)=54$

$x=\frac{54}{6}$

$x=9$

Hence, one must build 9 bathrooms with 6 stalls each.

6 0

3 years ago

Could 7.7 cm , 4.0 cm , 7.7 cm,4.0 cm,7, point, 7, start text, space, c, m, end text, comma, 4, point, 0, start text, space, c,

Lyrx [107]

Answer:

With given side lengths a triangle <u>could not</u> be created.

Step-by-step explanation:

Given:

First side length = 7.7 cm

Second side length = 4.0 cm

Third side length = 1.7 cm

We need find whether this could be the side length of the triangle.

Solution:

Now we know that;

By Triangle In equality property which states that;

"Sum of the two side length of the triangle must be greater than third side."

It should fulfill all three conditions;

So we will find the same.

Condition 1:

First Side + Second Side > Third side

$7.7+4.0>1.7\\\\11.7>1.7$

Hence This condition is true.

Condition 2:

Second side + Third Side > First side

$4.0+1.7>7.7\\\\5.7>7.7$

Hence This condition is False.

Condition 3:

First side + Third Side > Second side

$7.7+1.7>4.0\\\\9.4>4.0$

Hence This condition is true.

Since One of the condition is false hence With given side lengths a triangle could not be created.

8 0

3 years ago

Read 2 more answers